Ask yourself what do you eat before you practice...
The answer is likely that you don't even think about it and it doesn't make any difference.
Do you think Efren will start missing if you give him a cheeseburger and some coke during a match?
Usually just thinking about this gives a player one more thing to be distracted about. I've seen players who try to manipulate their performance with x breathing exercises or y amount of beers and x number of hours sleep. Actually, they do all this because they are nervous and just thinking too much. Be relaxed and focused and you'll perform as well as you're capable of.
Eat when hungry, drink when thirsty, sleep when tired. Don't fixate on it.
The answer is likely that you don't even think about it and it doesn't make any difference.
Do you think Efren will start missing if you give him a cheeseburger and some coke during a match?
Usually just thinking about this gives a player one more thing to be distracted about. I've seen players who try to manipulate their performance with x breathing exercises or y amount of beers and x number of hours sleep. Actually, they do all this because they are nervous and just thinking too much. Be relaxed and focused and you'll perform as well as you're capable of.
Eat when hungry, drink when thirsty, sleep when tired. Don't fixate on it.